Journal articles: 'Aquifers Victoria Latrobe Valley'

1

Strand, Julian, Reem Freij-Ayoub, and Shakil Ahmed. "Simulating the impact of coal seam gas water production on aquifers." APPEA Journal 52, no. 1 (2012): 545. http://dx.doi.org/10.1071/aj11042.

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Derived from a larger scale project, which studied geomechanical issues associated with coal seam gas (CSG) production, this paper investigates a hypothetical case study based on the Latrobe Valley, Gippsland Basin, Victoria. The paper focuses on examining aquifer water management associated with CSG production-related water extraction. As such, the paper limits itself to determining the volume of water production from a hypothetical case study area in the Latrobe Valley. A simplistic property model and methane production strategy has been used. The impact of extraction of this water on the hydraulic head in aquifers underlying the produced seams is quantified. The Latrobe Valley Depression contains 129,000 million tonnes of coal resources and is one of the world’s largest, and lowest cost, energy sources. Most of Victoria’s electricity is generated using coal from the Loy Yang, Morwell and Yallourn mines. In addition to these massive operations, significant additional coal resources are available and unallocated at this time. Opportunities exist for the continued usage of these resources for electricity production, gasification, liquefaction and other coal conversion processes, as well as solid fuel for industrial, domestic and other uses. The existence of data from the Victorian Department of Primary Industries 2003 coal resource model was the main reason for the selection of the case study, and their data was used to form a model of the stratigraphy of the Latrobe Valley. Aquifer models were simulated in MODFLOW, based on extraction figures modelled in the CSG simulator COMET3.

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2

Quinn, Matthew. "Carbon capture and storage: a review of Australian projects." APPEA Journal 62, no. 1 (May 13, 2022): 334–41. http://dx.doi.org/10.1071/aj21161.

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Within Australia, carbon capture and storage (CCS) and carbon capture, utilisation and storage will play a significant role as part of an ‘all of the above’ approach to managing greenhouse gas emissions. Two CCS projects are currently operating: Gorgon and the Otway CCS project. The Gorgon and Jansz-Io fields contain approximately 14% carbon dioxide (CO2). The CO2 is brought to shore at Barrow Island and injected into the Dupuy Formation saline aquifer at a depth of 2500 m. While the project has experienced delays with start-up and operational issues, to July 2021 nearly 5 MMt of CO2 had been injected. The Otway CCS Project is a research facility used to study subsurface CO2 storage and behaviour within saline aquifers and depleted reservoirs. Since the start of the project in 2007 a total of 95 000 t of CO2 has been stored. Final Investment Decision was taken for the Moomba CCS project on 1 November 2021 and for the Leigh Creek Urea project in March 2021. In addition, feasibility studies are being carried out across multiple projects within Australia including the South West and Mid-West Projects in the Perth Basin, CarbonNet in Victoria’s Latrobe Valley and Gippsland Basin and the Moonie oil field EOR, Integrated Surat Basin Project and the ATP 2062-P Buckland Basalt projects in the Bowen-Surat Basin. A CCS hub at Bayu-Undan is being assessed as a possible option to reduce the carbon footprint of the Barossa, Caldita and Evans Shoals projects, and feasibility studies are underway into large-scale multi-user CCS hubs near both Darwin and Karratha.

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Barton, C. M., C. S. Gloe, and G. R. Holdgate. "Latrobe Valley, Victoria, Australia: A world class brown coal deposit." International Journal of Coal Geology 23, no. 1-4 (September 1993): 193–213. http://dx.doi.org/10.1016/0166-5162(93)90048-f.

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Greenwood, David R. "Miocene wood from the LaTrobe Valley coal measures, Victoria, Australia." Alcheringa: An Australasian Journal of Palaeontology 29, no. 2 (January 2005): 351–63. http://dx.doi.org/10.1080/03115510508619311.

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5

Finch, C. F., and Erin Cassell. "AN EPIDEMIOLOGICAL STUDY OF SPORTS INJURIES IN THE LATROBE VALLEY, VICTORIA, AUSTRALIA." Medicine & Science in Sports & Exercise 31, Supplement (May 1999): S261. http://dx.doi.org/10.1097/00005768-199905001-01259.

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6

Keddie, Tom. "Wind power in Victoria." Proceedings of the Royal Society of Victoria 126, no. 2 (2014): 20. http://dx.doi.org/10.1071/rs14020.

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In terms of generation capacity, Victoria has about 12,500 MW, out of a National Electricity Market (NEM) total of over 46,000 MW. A bit over half of Victoria’s capacity is made up of the brown coal generators in the Latrobe Valley (Loy Yang, Hazelwood, Yallourn). Gas-fired generation (mainly large open-cycle peaking plants, designed to operate only in times of high demand) and hydro plants (mainly parts of the Snowy scheme) add about 20% each, with wind currently making up the balance of around 9% of installed capacity in Victoria. In terms of wind farm location across the NEM, installed capacity is predominantly located in Victoria and South Australia, and to a lesser extent in Tasmania, with very small amounts in New South Wales and Queensland. This distribution is almost entirely due to the quality of the wind resource across the country.

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Macphee, D. E., C. J. Black, and A. H. Taylor. "Cements incorporating brown coal fly ash from the latrobe valley region of Victoria, Australia." Cement and Concrete Research 23, no. 3 (May 1993): 507–17. http://dx.doi.org/10.1016/0008-8846(93)90001-p.

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8

Rozefelds, AC. "Miocene Wilkinsonia fruits (Hicksbeachiinae, Proteaceae) from the base of the Yallourn Formation, Latrobe Valley, Victoria." Papers and Proceedings of the Royal Society of Tasmania 129 (1995): 59–62. http://dx.doi.org/10.26749/rstpp.129.59.

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Cassell, E. P. "Epidemiology of medically treated sport and active recreation injuries in the Latrobe Valley, Victoria, Australia." British Journal of Sports Medicine 37, no. 5 (October 1, 2003): 405–9. http://dx.doi.org/10.1136/bjsm.37.5.405.

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10

Sluiter, I. R. K., A. P. Kershaw, G. R. Holdgate, and D. Bulman. "Biogeographic, ecological and stratigraphic relationships of the Miocene brown coal floras, Latrobe Valley, Victoria, Australia." International Journal of Coal Geology 28, no. 2-4 (November 1995): 277–302. http://dx.doi.org/10.1016/0166-5162(95)00021-6.

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11

Reidy, B. L., and G. W. Samson. "An Assessment of a Low-Cost Wastewater Disposal System after Twenty-Five Years of Operation." Water Science and Technology 19, no. 5-6 (May 1, 1987): 701–10. http://dx.doi.org/10.2166/wst.1987.0249.

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A low-cost wastewater disposal system was commissioned in 1959 to treat domestic and industrial wastewaters generated in the Latrobe River valley in the province of Gippsland, within the State of Victoria, Australia (Figure 1). The Latrobe Valley is the centre for large-scale generation of electricity and for the production of pulp and paper. In addition other industries have utilized the brown coal resource of the region e.g. gasification process and char production. Consequently, industrial wastewaters have been dominant in the disposal system for the past twenty-five years. The mixed industrial-domestic wastewaters were to be transported some eighty kilometres to be treated and disposed of by irrigation to land. Several important lessons have been learnt during twenty-five years of operating this system. Firstly the composition of the mixed waste stream has varied significantly with the passage of time and the development of the industrial base in the Valley, so that what was appropriate treatment in 1959 is not necessarily acceptable in 1985. Secondly the magnitude of adverse environmental impacts engendered by this low-cost disposal procedure was not imagined when the proposal was implemented. As a consequence, clean-up procedures which could remedy the adverse effects of twenty-five years of impact are likely to be costly. The question then may be asked - when the total costs including rehabilitation are considered, is there really a low-cost solution for environmentally safe disposal of complex wastewater streams?

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12

Schinagl, Harley, Wendy Wright, and Philip Rayment. "Recruitment of Eucalyptus strzeleckii (Myrtaceae) in remnant patches of native vegetation in the Latrobe Valley and South Gippsland, Victoria." Australian Journal of Botany 61, no. 8 (2013): 654. http://dx.doi.org/10.1071/bt13097.

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Eucalyptus strzeleckii K.Rule (Strzelecki gum) is a medium to tall, forest swamp gum endemic to the foothills and flats of southern Victoria. It is listed as Vulnerable at State (Victoria) and Federal levels. Many of the existing populations are dominated by mature, senescing trees in highly degraded habitats and recruitment of the species is rarely observed. The present study assessed the natural recruitment of Strzelecki gum at locations where mature Strzelecki gums are present and habitat degradation is not a significant limiting factor. The number of mature and recruiting Strzelecki gum individuals was assessed within gradient-oriented belt transects (gradsects) and a range of variables considered to be likely to affect recruitment were measured and correlated with the results of the recruitment study. Strzelecki gum recruits (<5 m tall) were found in 68.8% of gradsects and recruits accounted for 8–14% of the total stems counted for this species. Areas that had been recently burnt (within the past 5 years) had 15 times the number of Strzelecki gum recruits. Disturbance by flooding may also be positively associated with recruitment. Litter cover, habitat quality and density of intermediate-sized Strzelecki gums were all strong positive predictors for the density of Strzelecki gum recruits. Results from the present survey have provided a basis for land managers to estimate quantities of mature and recruiting Strzelecki gums in large populations.

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13

Carpenter, Raymond J., Myall Tarran, and Robert S. Hill. "Leaf fossils of Proteaceae subfamily Persoonioideae, tribe Persoonieae: tracing the past of an important Australasian sclerophyll lineage." Australian Systematic Botany 30, no. 2 (2017): 148. http://dx.doi.org/10.1071/sb16045.

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Fossils from the Eocene of South Australia and Western Australia and the Oligo–Miocene of Victoria represent the first known Australian leaf fossils of subfamily Persoonioideae, tribe Persoonieae. Persoonieaephyllum blackburnii sp. nov. is described from Middle Eocene Nelly Creek sediments near Lake Eyre, South Australia. Persoonieae are an important clade for understanding vegetation transitions in Australasia. The Nelly Creek leaf fossils are small (~6mm wide) and belong to an assemblage that has some characteristics of open vegetation, which is also inferred for the Oligo–Miocene of the Latrobe Valley, Victoria. In contrast, the Western Australian Late Eocene Persoonieae occur with diverse Lauraceae and other elements now typical of closed rainforests, and may, therefore, have been derived from communities that are unlike those in which most Persoonieae now occur. All fossil Persoonieae leaves so far known are hypostomatic (or virtually so), a state of stomatal distribution now only found in species of reasonably mesic habitats in New Zealand, New Caledonia and eastern Australian eucalypt forests. The ancestral state of stomatal distribution in Persoonieae leaves is unclear, but evidence suggests ancient associations of amphistomaty with open habitats, evolutionary loss of adaxial stomata in more closed vegetation, and the evolution of pronounced xerophylly within south-western Australian heathlands.

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Biswas, Mathin, and Marjorie Jerrard. "Photo elicitation in management history." Journal of Management History 24, no. 4 (September 10, 2018): 362–76. http://dx.doi.org/10.1108/jmh-02-2018-0018.

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Purpose This paper aims to demonstrate advantages of using the photo elicitation technique from sociology, ethnography and visual anthropology to management history through reference to a study of job loss within the State Electricity Commission of Victoria in the Latrobe Valley, Australia, as it was undergoing transition and privatization in the early 1990s. Design/methodology/approach This is a methodology paper exploring photo elicitation and the theoretical perspectives of life course and identity work when applied in management history. Findings The use of photo elicitation encouraged interview participants to share their perspectives about the common experience of job loss in an Australian regional area which gave rise to some common themes about occupational identity and the challenges of being unemployed. Social implications After job loss, some common experiences have been found, namely, depression; drug and alcohol addiction; domestic violence and family break down; and even suicide. Originality/value Use of photo elicitation provided the methodology and framework to undertake original research in management history in an Australian region still experiencing denidustrialization of brown coal mining and power generation.

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15

Norman, CP. "Effect of groundwater pump management on reclaiming salinised land in the Goulburn Valley, Victoria." Australian Journal of Experimental Agriculture 35, no. 2 (1995): 215. http://dx.doi.org/10.1071/ea9950215.

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In 1985, groundwater pumping from shallow aquifers, with off-farm disposal, began near Girgarre in the Goulburn Valley, Victoria, to provide salinity control to about 1000 ha of farming land. Two groundwater pumps (TI02 and T103) ran continuously for the first 5 years of the project before reverting to intermittent pumping. The operation of a third pump (T103) was based on the capacity for disposal into an evaporation basin. Following 3 years of groundwater pumping, significant reductions in root-zone (0-0.6 m) soil salinity levels were recorded in both annual and perennial pasture paddocks within 350 m of a pump. Yields of perennial pasture on all monitored paddocks showed a significant increase after commencement of the project. In a paddock 300 m from a groundwater pump, average dry matter production increased from 6.3 to 17.2 t/ha. year within 4 years of pumping. Reclamation was reduced by more than a year on paddocks not subjected to irrigation, or those located >800 m from a groundwater pump. Once reclamation was achieved from continuous pumping, the introduction of intermittent pumping continued to maintain optimum soil salinity and pasture production levels on the irrigated paddocks. However, on a dryland paddock and those located >800 m from a pump, increasing fluctuations in soil salinity and soil sodicity levels were measured under this management regime.

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Macumber, Phillip G., and Jennifer J. Macumber. "Groundwater flow in the Campaspe and Loddon Valleys of Northern Victoria: an enhanced role for the Shepparton Formation." Proceedings of the Royal Society of Victoria 122, no. 2 (2010): 43. http://dx.doi.org/10.1071/rs10015.

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Recent work on the fluvial aquifer systems of the Campaspe and Loddon Valleys in northern Victoria has shown that a two-aquifer conceptualisation and use of ‘typical’ hydraulic parameters for the Calivil Formation regional aquifer and its notional aquitard the Shepparton Formation, may mask the true nature of their interactions. In the highland tracts of the Loddon and Campaspe Valleys the regional aquifer system comprises the Calivil Formation and much of the Shepparton Formation. On the southern Loddon Plains, intensive groundwater development occurs from both the Calivil Formation and a Shepparton Formation ‘sand sheet’ aquifer, which follow separate paths across the plain, dictated by an evolving late Tertiary palaeogeography. Whatever the aquifer system invoked, the emphasis has been on horizontal down basin flow. At other times, upbasin flow of saline water under reversed hydraulic gradients into irrigation areas has been stressed, with the concerns for aquifer salinisation. Yet it is shown that in the Campaspe Valley, vertical flow from overlying or underlying aquifers poses a far more immediate salinity threat to the regional Calivil Formation aquifer than upbasin horizontal flow. Overall, the role of the Shepparton Formation as a significant aquifer system, and elsewhere as a conduit for salinisation via vertical flow, has been largely overlooked. More generally, the lithological variability of the Shepparton Formation across north central Victoria strongly influences the behaviour of the regional aquifer system, including groundwater throughflow and groundwater development. This is especially clear on the permeable Campaspe Fan, which is the principal recharge area in the Campaspe Valley, with recharge coming from direct precipitation, the Campaspe River, irrigation, and the Waranga-Western and Campaspe No 1 channels.

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Yu, M. C. L., I. Cartwright, J. L. Braden, and S. T. de Bree. "Examining the spatial and temporal variation of groundwater inflows to a valley-to-floodplain river using <sup>222</sup>Rn, geochemistry and river discharge: the Ovens River, southeast Australia." Hydrology and Earth System Sciences 17, no. 12 (December 6, 2013): 4907–24. http://dx.doi.org/10.5194/hess-17-4907-2013.

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Abstract. Radon (222Rn) and major ion geochemistry were used to define and quantify the catchment-scale groundwater-surface water interactions along the Ovens River in the southeast Murray–Darling Basin, Victoria, Australia, between September 2009 and October 2011. The Ovens River is characterized by the transition from a single channel within a mountain valley in the upper catchment to a multi-channel meandering river on flat alluvial plains in the lower catchment. Overall, the Ovens River is dominated by gaining reaches, receiving groundwater from both alluvial and basement aquifers. The distribution of gaining and losing reaches is governed by catchment morphology and lithology. In the upper catchment, rapid groundwater recharge through the permeable aquifers increases the water table. The rising water table, referred to as hydraulic loading, increases the hydraulic head gradient toward the river and hence causes high baseflow to the river during wet (high flow) periods. In the lower catchment, lower rainfall and finer-gained sediments reduce the magnitude and variability of hydraulic gradient between the aquifer and the river, producing lower but more constant groundwater inflows. The water table in the lower reaches has a shallow gradient, and small changes in river height or groundwater level can result in fluctuating gaining and losing behaviour. The middle catchment represents a transition in river-aquifer interactions from the upper to the lower catchment. High baseflow in some parts of the middle and lower catchments is caused by groundwater flowing over basement highs. Mass balance calculations based on 222Rn activities indicate that groundwater inflows are 2 to 17% of total flow with higher inflows occurring during high flow periods. In comparison to 222Rn activities, estimates of groundwater inflows from Cl concentrations are higher by up to 2000% in the upper and middle catchment but lower by 50 to 100% in the lower catchment. The high baseflow estimates using Cl concentrations may be due to the lack of sufficient difference between groundwater and surface water Cl concentrations. Both hydrograph separation and differential flow gauging yield far higher baseflow fluxes than 222Rn activities and Cl concentrations, probably indicating the input of other sources to the river in additional to regional groundwater, such as bank return flows.

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Yu, M. C. L., I. Cartwright, J. L. Braden, and S. T. de Bree. "Examining the spatial and temporal variation of groundwater inflows to a valley-to-floodplain river using <sup>222</sup>Rn, geochemistry and river discharge: the Ovens River, southeast Australia." Hydrology and Earth System Sciences Discussions 10, no. 4 (April 24, 2013): 5225–67. http://dx.doi.org/10.5194/hessd-10-5225-2013.

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Abstract. Radon (222Rn) and major ion geochemistry were used to define and quantify the catchment-scale river-aquifer interactions along the Ovens River in the southeast Murray-Darling Basin, Victoria, Australia, between September 2009 and October 2011. The Ovens River is characterized by the transition from a single channel river residing within a mountain valley in the upper catchment to a multi-channel meandering river on flat alluvial plains in the lower catchment. Overall, the river is dominated by gaining reaches, receiving groundwater from both alluvial and basement aquifers. The distribution of gaining and losing reaches is governed by catchment morphology and lithology. In the upper catchment, rapid groundwater recharge through sediments that have high hydraulic conductivities in a narrow valley produces higher baseflow to the river during wet (high flow) periods as a result of hydraulic loading. In the lower catchment, the open and flat alluvial plains, lower rainfall and finer-gained sediments reduce the magnitude and variability of hydraulic gradient between the aquifer and the river, producing lower and constant groundwater inflow. With a small difference between the water table and the river height, small changes in river height or in groundwater level can result fluctuating gaining and losing behaviour along the river. The middle catchment represents a transition in river-aquifer interactions from upper to lower catchment. High baseflow in some parts of the middle and lower catchments is caused by groundwater flow over basement highs. Mass balance calculations based on 222Rn activities indicate that groundwater inflow is 4–22% of total flow with higher baseflow occurring in high flow periods. Uncertainties in gas exchange coefficient and 222Rn activities of groundwater alter the calculated groundwater inflow to 3–35%. Ignoring hyporheic exchange appears not to have a significant impact on the total groundwater estimates. In comparison to 222Rn activities, Cl concentrations yield higher estimates of groundwater influxes by up to 2000% in the upper and middle catchments but lower estimates by 50–100% in the lower catchment. Hydrograph separation yields far higher baseflow fluxes than 222Rn activities and Cl concentrations. The high baseflow estimates using Cl concentrations may be due to the lack of distinct difference between groundwater and surface water Cl concentrations. The other mismatches may indicate the input of other sources of water in additional to regional groundwater.

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Quinn, Matthew. "Concurrent 8. Presentation for: Carbon capture and storage: a review of Australian projects." APPEA Journal 62, no. 4 (June 3, 2022). http://dx.doi.org/10.1071/aj21325.

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Presented on Tuesday 17 May: Session 8 Within Australia, carbon capture and storage (CCS) and carbon capture, utilisation and storage will play a significant role as part of an ‘all of the above’ approach to managing greenhouse gas emissions. Two CCS projects are currently operating: Gorgon and the Otway CCS project. The Gorgon and Jansz-Io fields contain approximately 14% carbon dioxide (CO2). The CO2 is brought to shore at Barrow Island and injected into the Dupuy Formation saline aquifer at a depth of 2500 m. While the project has experienced delays with start-up and operational issues, to July 2021 nearly 5 MMt of CO2 had been injected. The Otway CCS Project is a research facility used to study subsurface CO2 storage and behaviour within saline aquifers and depleted reservoirs. Since the start of the project in 2007 a total of 95 000 t of CO2 has been stored. Final Investment Decision was taken for the Moomba CCS project on 1 November 2021 and for the Leigh Creek Urea project in March 2021. In addition, feasibility studies are being carried out across multiple projects within Australia including the South West and Mid-West Projects in the Perth Basin, CarbonNet in Victoria’s Latrobe Valley and Gippsland Basin and the Moonie oil field EOR, Integrated Surat Basin Project and the ATP 2062-P Buckland Basalt projects in the Bowen-Surat Basin. A CCS hub at Bayu-Undan is being assessed as a possible option to reduce the carbon footprint of the Barossa, Caldita and Evans Shoals projects, and feasibility studies are underway into large-scale multi-user CCS hubs near both Darwin and Karratha. To access the presentation click the link on the right. To read the full paper click here

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20

Tomaney, John, and Margaret Somerville. "Climate Change and Regional Identity in the Latrobe Valley, Victoria." Australian Humanities Review 49 (November 2010). http://dx.doi.org/10.22459/ahr.49.2010.02.

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21

Schofield, Robyn, Steven Utembe, Caitlin Gionfriddo, Michael Tate, David Krabbenhoft, Samuel Adeloju, Melita Keywood, Roger Dargaville, and Mike Sandiford. "Atmospheric mercury in the Latrobe Valley, Australia: Case study June 2013." Elementa: Science of the Anthropocene 9, no. 1 (2021). http://dx.doi.org/10.1525/elementa.2021.00072.

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Gaseous elemental mercury observations were conducted at Churchill, Victoria, in Australia from April to July, 2013, using a Tekran 2537 analyzer. A strong diurnal variation with daytime average values of 1.2–1.3 ng m–3 and nighttime average values of 1.6–1.8 ng m–3 was observed. These values are significantly higher than the Southern Hemisphere average of 0.85–1.05 ng m–3. Churchill is in the Latrobe Valley, approximately 150 km East of Melbourne, where approximately 80% of Victoria’s electricity is generated from low-rank brown coal from four major power stations: Loy Yang A, Loy Yang B, Hazelwood, and Yallourn. These aging generators do not have any sulfur, nitrogen oxide, or mercury air pollution controls. Mercury emitted in the 2015–2016 year in the Latrobe Valley is estimated to have had an externalized health cost of $AUD88 million. Air pollution mercury simulations were conducted using the Weather Research and Forecast model with Chemistry at 3 × 3 km resolution. Electrical power generation emissions were added using mercury emissions created from the National Energy Market’s 5-min energy distribution data. The strong diurnal cycle in the observed mercury was well simulated (R2 = .49 and P value = 0.00) when soil mercury emissions arising from several years of wet and dry deposition in a radius around the power generators was included in the model, as has been observed around aging lignite coal power generators elsewhere. These results indicate that long-term air and soil sampling in power generation regions, even after the closure of coal fired power stations, will have important implications to understanding the airborne mercury emissions sources.

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22

White, Ricky John, and Melissa Joy Wolfe. "Education through smoke and ash: thinking without method and the argument for a post-growth education." Australian Journal of Environmental Education, July 26, 2022, 1–14. http://dx.doi.org/10.1017/aee.2022.33.

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Abstract This paper speculates as to the material consequences of the ecological crisis for the current objectives of the education system in the State of Victoria. Drawing upon new materialist thought, it presents a post-qualitative inquiry into the lead author’s experiences as an educator during a 2014 fire event in the Latrobe Valley region of Gippsland, Victoria, Australia, known as the Hazelwood Coal Mine Fire. By engaging in thinking without method it unfolds an argument that a political preference for certain theories has resulted in economic growth becoming a key objective of Victoria’s education system. It explores alternative theoretical perspectives, including the theory that there are limits to growth. This theoretical shift implies that any meaningful response to the ecological crisis will require a transition to a post-growth society. The paper considers the implication of this alternative theory for the current objectives of the education system in the State of Victoria. In so doing, it considers what it might mean if we accepted our response-ability to educate for a post-growth society rather than for a society surrounded by smoke and ash.

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Lee, Susan, Margaret O'Connor, Ysanne Chapman, Vicki Hamilton, and Karen Francis. "A very public death: dying of mesothelioma and asbestos-related lung cancer (M/ARLC) in the Latrobe Valley, Victoria, Australia." Rural and Remote Health, August 25, 2009. http://dx.doi.org/10.22605/rrh1183.

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Melody, Shannon, Karen Wills, Jane Ford, Alison Venn, and Fay Johnston. "68Maternal exposure to PM2.5 from a severe smoke event and birth outcomes in Victoria, Australia." International Journal of Epidemiology 50, Supplement_1 (September 1, 2021). http://dx.doi.org/10.1093/ije/dyab168.432.

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Abstract Background The 2014 Hazelwood coal mine fire was an unprecedented six-week severe smoke event in the Latrobe Valley, southeastern Australia. We aimed to determine whether maternal exposure to fine particulate matter (PM2.5) attributable to the event was associated with adverse fetal growth or maturity, including birthweight, small for gestational age, term low birthweight or preterm birth. Methods A cohort of babies born within the affected region was defined used administrative perinatal data. Maternal average and peak PM2.5 was assigned to residential address at time of delivery using a chemical transport model. Maternal, infant, meteorological and temporal variables were included in final linear and log-binomial regression models. Results 3,591 singleton livebirths were included; 763 were exposed in utero. Average PM2.5 exposure was 4.4 µg/m3 (IQR 2.1 µg/m3); average peak was 45.0 µg/m3 (IQR 35.1 µg/m3). No association between PM2.5 and fetal growth or maturity was observed. Gestational diabetes mellitus was an effect modifier in the relationship; babies of exposed gestational diabetic mothers were 97 grams heavier per 10 µg/m3 increase in average PM2.5 exposure (95%CI 74, 120 grams), compared to mothers without gestational diabetes. Conclusions Maternal PM2.5 exposure from a smoke event was not associated with adverse fetal growth or maturity. There was a trophic response amongst babies of mothers with gestational diabetes. Key messages Babies born to mothers with gestational diabetes may be more susceptible to the effects of smoke events on birthweight.

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Journal articles on the topic 'Aquifers Victoria Latrobe Valley'

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